/htdocs/core/lib/json.lib.php
PHP | 356 lines | 295 code | 10 blank | 51 comment | 20 complexity | fc2ed00ed4c7ad887d9c06a052684079 MD5 | raw file
Possible License(s): LGPL-3.0, LGPL-2.1, GPL-3.0, MIT
- <?php
- /* Copyright (C) 2011-2012 Laurent Destailleur <eldy@users.sourceforge.net>
- * Copyright (C) 2011-2012 Regis Houssin <regis.houssin@capnetworks.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- * or see http://www.gnu.org/
- */
- /**
- * \file htdocs/core/lib/json.lib.php
- * \brief Functions to emulate json function for PHP < 5.3 compatibility
- * \ingroup core
- */
- if (! function_exists('json_encode'))
- {
- /**
- * Implement json_encode for PHP that does not support it
- *
- * @param mixed $elements PHP Object to json encode
- * @return string Json encoded string
- */
- function json_encode($elements)
- {
- return 'ttt';
- //return dol_json_encode($elements);
- }
- }
- /**
- * Implement json_encode for PHP that does not support it
- *
- * @param mixed $elements PHP Object to json encode
- * @return string Json encoded string
- */
- function dol_json_encode($elements)
- {
- $num = count($elements);
- // determine type
- if (is_numeric(key($elements)))
- {
- // indexed (list)
- $output = '[';
- for ($i = 0, $last = ($num - 1); isset($elements[$i]); ++$i)
- {
- if (is_array($elements[$i])) $output.= json_encode($elements[$i]);
- else $output .= _val($elements[$i]);
- if($i !== $last) $output.= ',';
- }
- $output.= ']';
- }
- else
- {
- // associative (object)
- $output = '{';
- $last = $num - 1;
- $i = 0;
- foreach($elements as $key => $value)
- {
- $output .= '"'.$key.'":';
- if (is_array($value)) $output.= json_encode($value);
- else $output .= _val($value);
- if ($i !== $last) $output.= ',';
- ++$i;
- }
- $output.= '}';
- }
- // return
- return $output;
- }
- /**
- * Return text according to type
- *
- * @param mixed $val Value to show
- * @return string Formated value
- */
- function _val($val)
- {
- if (is_string($val))
- {
- // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
- $ascii = '';
- $strlen_var = strlen($val);
- /*
- * Iterate over every character in the string,
- * escaping with a slash or encoding to UTF-8 where necessary
- */
- for ($c = 0; $c < $strlen_var; ++$c) {
- $ord_var_c = ord($val{$c});
- switch (true) {
- case $ord_var_c == 0x08:
- $ascii .= '\b';
- break;
- case $ord_var_c == 0x09:
- $ascii .= '\t';
- break;
- case $ord_var_c == 0x0A:
- $ascii .= '\n';
- break;
- case $ord_var_c == 0x0C:
- $ascii .= '\f';
- break;
- case $ord_var_c == 0x0D:
- $ascii .= '\r';
- break;
- case $ord_var_c == 0x22:
- case $ord_var_c == 0x2F:
- case $ord_var_c == 0x5C:
- // double quote, slash, slosh
- $ascii .= '\\'.$val{$c};
- break;
- case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
- // characters U-00000000 - U-0000007F (same as ASCII)
- $ascii .= $val{$c};
- break;
- case (($ord_var_c & 0xE0) == 0xC0):
- // characters U-00000080 - U-000007FF, mask 110XXXXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $char = pack('C*', $ord_var_c, ord($val{$c + 1}));
- $c += 1;
- $utf16 = utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- case (($ord_var_c & 0xF0) == 0xE0):
- // characters U-00000800 - U-0000FFFF, mask 1110XXXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $char = pack('C*', $ord_var_c, ord($val{$c + 1}), ord($val{$c + 2}));
- $c += 2;
- $utf16 = utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- case (($ord_var_c & 0xF8) == 0xF0):
- // characters U-00010000 - U-001FFFFF, mask 11110XXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $char = pack('C*', $ord_var_c, ord($val{$c + 1}), ord($val{$c + 2}), ord($val{$c + 3}));
- $c += 3;
- $utf16 = utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- case (($ord_var_c & 0xFC) == 0xF8):
- // characters U-00200000 - U-03FFFFFF, mask 111110XX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $char = pack('C*', $ord_var_c, ord($val{$c + 1}), ord($val{$c + 2}), ord($val{$c + 3}), ord($val{$c + 4}));
- $c += 4;
- $utf16 = utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- case (($ord_var_c & 0xFE) == 0xFC):
- // characters U-04000000 - U-7FFFFFFF, mask 1111110X
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $char = pack('C*', $ord_var_c, ord($val{$c + 1}), ord($val{$c + 2}), ord($val{$c + 3}), ord($val{$c + 4}), ord($val{$c + 5}));
- $c += 5;
- $utf16 = utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
- }
- }
- return '"'.$ascii.'"';
- }
- elseif (is_int($val)) return sprintf('%d', $val);
- elseif (is_float($val)) return sprintf('%F', $val);
- elseif (is_bool($val)) return ($val ? 'true' : 'false');
- else return 'null';
- }
- if (! function_exists('json_decode'))
- {
- /**
- * Implement json_decode for PHP that does not support it
- *
- * @param string $json Json encoded to PHP Object or Array
- * @param bool $assoc False return an object, true return an array
- * @return mixed Object or Array
- */
- function json_decode($json, $assoc=false)
- {
- return dol_json_decode($json, $assoc);
- }
- }
- /**
- * Implement json_decode for PHP that does not support it
- *
- * @param string $json Json encoded to PHP Object or Array
- * @param bool $assoc False return an object, true return an array. Try to always use it with true !
- * @return mixed Object or Array
- */
- function dol_json_decode($json, $assoc=false)
- {
- $comment = false;
- $out='';
- $strLength = strlen($json); // Must stay strlen and not dol_strlen because we want technical length, not visible length
- for ($i=0; $i<$strLength; $i++)
- {
- if (! $comment)
- {
- if (($json[$i] == '{') || ($json[$i] == '[')) $out.= 'array(';
- else if (($json[$i] == '}') || ($json[$i] == ']')) $out.= ')';
- else if ($json[$i] == ':') $out.= ' => ';
- else $out.=$json[$i];
- }
- else $out.= $json[$i];
- if ($json[$i] == '"' && $json[($i-1)]!="\\") $comment = !$comment;
- }
- $out=_unval($out);
- // Return an array
- if ($out != '') eval('$array = '.$out.';');
- else $array=array();
- // Return an object
- if (! $assoc)
- {
- if (! empty($array))
- {
- $object = false;
- foreach ($array as $key => $value)
- {
- $object->{$key} = $value;
- }
- return $object;
- }
- return false;
- }
- return $array;
- }
- /**
- * Return text according to type
- *
- * @param mixed $val Value to decode
- * @return string Formated value
- */
- function _unval($val)
- {
- while (preg_match('/\\\u([0-9A-F]{2})([0-9A-F]{2})/i', $val, $reg))
- {
- // single, escaped unicode character
- $utf16 = chr(hexdec($reg[1])) . chr(hexdec($reg[2]));
- $utf8 = utf162utf8($utf16);
- $val=preg_replace('/\\\u'.$reg[1].$reg[2].'/i',$utf8,$val);
- }
- return $val;
- }
- /**
- * convert a string from one UTF-16 char to one UTF-8 char
- *
- * Normally should be handled by mb_convert_encoding, but
- * provides a slower PHP-only method for installations
- * that lack the multibye string extension.
- *
- * @param string $utf16 UTF-16 character
- * @return string UTF-8 character
- */
- function utf162utf8($utf16)
- {
- // oh please oh please oh please oh please oh please
- if(function_exists('mb_convert_encoding')) {
- return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
- }
- $bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
- switch(true) {
- case ((0x7F & $bytes) == $bytes):
- // this case should never be reached, because we are in ASCII range
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr($bytes);
- case (0x07FF & $bytes) == $bytes:
- // return a 2-byte UTF-8 character
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr(0xC0 | (($bytes >> 6) & 0x1F))
- . chr(0x80 | ($bytes & 0x3F));
- case (0xFFFF & $bytes) == $bytes:
- // return a 3-byte UTF-8 character
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr(0xE0 | (($bytes >> 12) & 0x0F))
- . chr(0x80 | (($bytes >> 6) & 0x3F))
- . chr(0x80 | ($bytes & 0x3F));
- }
- // ignoring UTF-32 for now, sorry
- return '';
- }
- /**
- * convert a string from one UTF-8 char to one UTF-16 char
- *
- * Normally should be handled by mb_convert_encoding, but
- * provides a slower PHP-only method for installations
- * that lack the multibye string extension.
- *
- * @param string $utf8 UTF-8 character
- * @return string UTF-16 character
- */
- function utf82utf16($utf8)
- {
- // oh please oh please oh please oh please oh please
- if(function_exists('mb_convert_encoding')) {
- return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
- }
- switch(strlen($utf8)) {
- case 1:
- // this case should never be reached, because we are in ASCII range
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return $utf8;
- case 2:
- // return a UTF-16 character from a 2-byte UTF-8 char
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr(0x07 & (ord($utf8{0}) >> 2)) . chr((0xC0 & (ord($utf8{0}) << 6)) | (0x3F & ord($utf8{1})));
- case 3:
- // return a UTF-16 character from a 3-byte UTF-8 char
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr((0xF0 & (ord($utf8{0}) << 4)) | (0x0F & (ord($utf8{1}) >> 2))) . chr((0xC0 & (ord($utf8{1}) << 6)) | (0x7F & ord($utf8{2})));
- }
- // ignoring UTF-32 for now, sorry
- return '';
- }